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BS44 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BS44: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYURETHANE, hole_diameter: 0.608 INCHES NOMINAL IN, overall_height: 0.160 INCHES NOMINAL IN, style_designator: DONUT TOP COUNTERBORED, end_item_identification: 4940-01-471-6396, outside/top_flange_diameter: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-541-0788, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BS44
NSN: 5340-01-541-0788
FSC: 5340 — Hardware, Commercial
CAGE: 3MMK0 — BUMPER SPECIALITIES, INC (USA)
SPECIFICATIONS
materialPLASTIC POLYURETHANE
hole_diameter0.608 INCHES NOMINAL IN
overall_height0.160 INCHES NOMINAL IN
style_designatorDONUT TOP COUNTERBORED
end_item_identification4940-01-471-6396
outside/top_flange_diameter0.750 INCHES NOMINAL IN
NSN5340-01-541-0788
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BS44 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OUTSIDE/TOP FLANGE DIAMETER: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DONUT TOP COUNTERBORED
•
COLOR: BLACK OR WHITE, TRANSPARENT
•
MATERIAL: PLASTIC POLYURETHANE
•
HOLE DIAMETER: 0.608 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.160 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.750 INCHES NOMINAL IN
STYLE DESIGNATORDONUT TOP COUNTERBORED
COLORBLACK OR WHITE, TRANSPARENT
END ITEM IDENTIFICATION4940-01-471-6396
MATERIALPLASTIC POLYURETHANE
HOLE DIAMETER0.608 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BS44?
BS44 is a BUMPER.
What is the NSN for BS44?
BS44 is cataloged in the U.S. Government catalog under NSN 5340-01-541-0788. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.